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+// Copyright 2009 the Sputnik authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/**
+ * NaN !== NaN
+ *
+ * @path ch08/8.5/S8.5_A1.js
+ * @description Compare NaN with NaN
+ */
+
+var x = Number.NaN;
+var x_ = Number.NaN;
+
+///////////////////////////////////////////////////////
+// CHECK #1
+if (x === x_){
+ $ERROR('#1: NaN !== NaN ');
+}
+//
+//////////////////////////////////////////////////////////
+